Type-writing machine



v(No Modely 5 ,sheets-sheen 1.

SJ?. LARSON. TYPE WRITING MACHINE,

N0.545,594. y m Patentedsept. 3,1895.

(No-Model.) .5 Sheets-Sheet 3. S. P. LARSON. n: TYPE WRITING MACHINE.

Patelllteipt. @895.

(No Model.) y 5 sneetsbsneen 4. E S. P. LARSON. TYPE WRITING MAGHNB.

No. 545,594. Patented Sept. 3,1895.

S.,I ,LAR'S0N. 'TYPE WRITING MACHINE'.

5 sneeze-sheet 5.

(No Model.)

. Patented Se'p'c. 3, 1895.

5222 me .u .5..

MI l

.e @KM UNITE!)l STATES PATENT Carien.

SW ANTE P. LARSON, OF CHICAGO, ILLINOIS.

' SPECIFICATION 'forming part of Letters Patent No. 545,594, dated September 3, 1895.

.To all whomj in, my concern,.-

e it known that SWANTE P. LARsoN,a citizen of the United States, residing at Chicago, in the'eounty of Cook and State of Illiynois, have invented certain new and useful Improvements in 'Iype-lVriting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention,'such as will enable others skilled in the art to which it appertains te make and use the same.

My invention relates to improvements in type-writing machines; and it has for its object to provide a simple and efficient machine adapted to be used for writing or printing upon a flat' sheet and level plane, as may be desired. f

In my invention the type and characters are carried upon the periphery of a wheel mounted upon the end of a shaft and adapted to be rotated therewith by the movement of an indeX-pointcrmoved horizontally to indicate the letter or character to -be printed. Said shaft and type-wheelarejournaled in and supported upon a frame pivotally attached to a slide. Said pivoted frame and typewheel are pressed downwardupon said pivot by the hand of the operator to fornLthe impression, and are lifted up therefrom to their normal height when the hand-pressure is removed by the action of a spring. The slide to which tpe type-wheel frame is pivoted is fed and moved along the ietterline by means of a pawl, which engages with the teeth of a' fixed rack and which is operated by the said upand-down .impression movement, the said movement being also adapted to operate the inking-roller arm. Said slide is supported upon Aslide-rods attached to the bed-plate frame and said bed-plate frame is provided with rollers upon which it is adapted to be moved from one line to another. Said bedplate frame is also provided with a radiusbar and center point, by means of which the machine is adapted to form the letters and words upon a circular line.

The invention consists substantially in the novel features, combination, and arrangement of parte hereinafter described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is a top or plan view of a type- Application tiled March 26, 1894; Serial No. 505,152. .(No model.)

writing machine embodying'my invention. Fig. 2 is a vertical longitudinal section taken ,on the line 2 2 of Fig. l, in which the pivoted frame and type-wheels are shown' in a down or impression forming position. Fig.- 3 is a rear end elevation with the basesection re`- moved and portions of the bed-plate frame and pivoted frame broken away, showing the arrangement for rotating the type-wheel.

Fig. 4 is a detail vertical section of the roller arrangement; for moving the machine when writing upon a level plane, taken on the line 4 4 of Fig. 1. Fig. 5 is'a side elevation with the type-wheel in a raised or non-impression position, the rear end portion of the base and frame being cut away and a portion of the frame and guide broken away to show the lower edge of the type-wheel and inkingroller in contact therewith. Fig. 6 is a front elevation with the type-wheel in a raised vposition, a front portion of the frame broken out to show the inking-roller in a position to ink the type, the upper portion of the arm or lever to which it is attached being shown by dotted lines. Fig. 7 is a frontend elevation with the type-wheel removed and shown in a down or impression position, the inking-roiler and arm being moved away from contact with the type-wheel, and in which a transverse section ot' the guide-rods and bed-plate frame is shown taken on the line 7 7 of Fig. l. Fig. 8 isan enlarged detail side view of the feeding and retaining pan-'ls and rack-teeth and of the intermediate or auxiliary feed-arm attached to the feed-arm of the pivoted type-wheel frame, showing the arrangement by which a variable or changeable feed motion is obtained. Fig. 9 is a plan View of the machine with the type-wheel and supporting-frame removed, the sliding frame being in a position at the end of the frame adapted for printing upon a circle, showing the attachment 0f the radius-'bar therefor. Fig. 10 is a front side elevation of a rear portion as represented by Fig. 9, and Fig. 1l is a detached end View of the supporting-rollers and connecting-belts.

Referring to the drawings, l designates the type-wheel, formed to the required size and shape of anysuitable metal or material. Said type-wheel is shouldered or turned down upon. its periphery to form a seat for an annular typering 2. Said ring, with the. letters, char' actors, and word-spaces formed nppn its outer edge or periphery, is made'by the eiectrotype process and is rigidly mounted upon said seat. ti-aid type-wheel is provided upon its front tace or eide with an index 3 of thev letters and other characters upon the typering', corresponding in location therewith, and with a. toothed registoringo'ing 4 rigidly secured to the haclrorrcvcrse sido. Said type'wheel has n central boreor perforation, and is mounted upon the liront end of a shaft 5 L,md held to ro titte therewith by means ot7 e. feather or spline inserted in the shaft and fitted into a keyway in the wheel, and ,in eecnred from moving endwise hy n shoulder upon the shaft and a screw 'thecrewed into the end of the shaft, by which nnranggen'ient n, piuraiity of typewheels interchangeably itted, lint provided with varying characters, niej.' he readilysuhstituted one for i the other. finiti shaft is provided upon its oppositie end with n., pnile'y wheel or disk 7, secoredA thereto nud adopted to rotate said shaft Y,end typonvheel by means cfa wire cord 8,.

wound nronnd said pnliey, {see Fig. 3,) the endeot' whichnre attached to the opposite ends of n troverete-har i), which hnr is made of steel, rind the ends of which are sprung down in attaching the wire cord to keep it drawn and `f .votmdftight nro-ond the policy, said wire cord fleeing nisoeeonred to the pulley at one point ,to prevent clipping. Said. traverse-har is sup pot-ted nt its center by the index-erin it), to

which it secured, and. hy which it is moved to rotate the typewheei in citi-tdtP direction in manner equivalent to a, toothed rack and wheel.` Said index arm is perforated and adapted to slide npon a rod il and the top edge of e. iinish covenpiztte 12. Said rod and plate are-secured to the vertical portion of thepivoted frame iti', into which the type-wheel shaft is jonrnnled. Said vertical portion has a lateral or horizontal plate which, as shown in the drawings, is formed a ,separate piece, the two able therewith.

parte being attached together, but which may be formed integrahif desired. Saidthorizonn tal port has two downwardly-projeoting arms le, perforated lor the insertion o'E the pivot-v rshai't i5, and which also passes through' the upwardly-inclined arms i6, formed integral with the sliding frnme 17', and by tneensof which the type-wheel-support ing traine is piv otally attnohed to said sliding; frame and movpose'dbetween said etidingand pivoted frames, adapted to littvnp said pivoted frame and type-wheel from ,the impressiompoint to the highest position, and whichy position ie deter- 23, the tipperend of which limits the downf wntdmoromentot the typewheei end the iinpreseion tornfiedthereby. t stud-ptn in At spiral spring- 18 is inter .inserted in said arm, upon which a roller the curved cam 2S, formed' upon the inkinglever, acting against the stationary roller 24, and again carried underneath thetypewheel to ink the type .bymeans ot' a spring 29, adapted Vtofhold the inlring-lever in contact with said 'rollerdnring the upward movement.

30 is ni-at pr jecting steeitooth,'rigidly attached'to the frontend of the sliding frame, which toothnters the spaces of the toothed ringupoitthoback'of the type-wheel as it is pnshetldor/'n pilot' the purpose ot' registering. or printingr the'l letters at the exact point deeired. 'Said sliding frame is perforated for the insertion of thel slde-rods 3l, upon which it is moved or fed` along to form the letters by thti reciprocating motion of en extended arinBzlt of the pivoted typewheel frame. Said motion is imparted thereto by the impression movement, a ratchet-parti 33 Abeing operatedl thereby, which engages with the'teeth of a fixed-rack 3s upon the bed-plate frame 35, to which said sliderods are secured by means ofthe projecting ears 36 thereon. Said ratchet;- `pawl-is not pivoted directly to said extended erm, but to an intervening arm 37, which is suspended upon a pivot-pin 38 in said ex: tended arm, and to which avariahie stroke is given for the purpose-.of moving,r the slide a greater or less distance, as may bereqnired by the varied sizeofftype to be used. Said variable feednrmi moved inone direction by a fixed stnd-pin 39, `inserted in the extended arm, and inthe other directionby an eccentric 40, supported upon a stud-pin 41 in said arm, the length of stroke being determined by adjustment of the eccentric to al'- low raid intervening arm to have more or less play between said eccentric and stud-pin, as may he desired. Said feed-pawl is held to engagement with the rack-teeth by means of a' spring t2 andlis provided with a raised pro-` jcted end portion 43, by whichit is adapted IOC to be lifted'from engagement with the rack, L

this being eiccted by means ot a shaft 4i,

jonrnaled` through the side of the sliding` frame, the inner end'oif with a projecting' dat transverse end portion -which is' provided 45, which extendsnnderneath the end of the i `pawl, and which, when the shaft isrotatcd or turned a quarter of a revolution bythe lingerleverd iipon the outer end of said shaft, lifts up said pawi and retnins itin a lifted position, and in like manner the said movement presses down the end of the retainingdog or pawl 4,7, centrally p'iveted to Athe slidingira'mc, causing the opposite end, which is held down. by

the spring 4,8, to belifted clear vfrom therack teeth, in which positio'h of said nawls the'sliding frame carrying the type-wheel is free to be moved along the slides in either direction to any desired point, as Will be readily understood.

49 is a pin projecting from the under side of the sliding frame, and is adapted to ring a bell at the end of the line in'the usual manner.

'lh'e bed-plate trame 35'is provided with a graduated scale 50,and an indicator l is secured to the front end of the sliding frame to indicate where to write Said indicator is also adapted to indicate the exact point at which it is desired to form the letters. Said bedplate frame is formed with hollow or chambered sides and ends. Roller-shafts 52 are placed in the side chambers, having their bearings through. the ends ofthe frame, upon which are mounted rubber roller-sect'ns 53, the faces of which are slightly below thebottom of the frame. Rubber bands 54 connect said roller-shafts to revolve them in unison.

One of said roller-shafts is provided upon its outer end with a toothed pinion-wheel 55, and above it upon a stud-shaft 56 is mounted to turn thereon a like pinion-wheel 57 and a milled finger-whee158, by which said frame is acaptedto be rolled or moved over a dat sheet to write or print upon a level piane. Said frame has attached thereto a radius-bar 59, .l

by which the machine is adapted to be moved in a circle to print or write a circular line upon a level plane or sheet of any size-such as drawings, maps, charts, and the like-as is frequently required to be done. `The radiusbar is provided with a pivot-pont at one end thereof, adapted to be insertedl into or securely attached to a board, and the machine is adjustable upon the radius-bar to the desii-ed distance between the center of the typewheel and pivot-point of the radius-bar. The direction of the adjustment is in aline with the face of the type-wheel, the wheelbeing central with the radius-bar when standing at the rear end of the machine.v The machine is adapted to be turned by hand to space the letters when it is used for printing a circular line.

GO is an ink-pad adapted for supplying ink to the typc-inking roller, for which purpose thbe slide is moved to the iront end et' the in'acliinc, at which point the ink-roller is upon tlie top of the pad. The type-wheel and pivoted traine are then moved up and down, as in the act of writing, which causes the inkroller to traverse the inlrpad, and which motion is continued until the desired quantity ot ink is transferred to the roller, when the pad is turned to one side and out of the way until it is again desired to be used.

6l is an index attached to the top of the vpivoted type-wlicel-carrying frame. Said index represents the letters, numerals, and characters formed upon the type-wheel and shown upon the face thereof and which stand in such relation thereto that when the indicator-pointer 62 at the top of the indicatorarm is moved to any one of said letters or characters the one indicated will be found at the bottom of the wheel and will be formedy 63 is ashield cast upon the pivoted fram? 8o adapted to protect the type-wheel from di and injury. l j

From the foregoing, description the operation is ob'vious, and consists in'inoving the indicator-point to the desired letter or character and in pushing down the typewhcel and pivoted frame to mak-ethe impression, for which purpose the hand of the operator rests upon the top of the horizontal plate of the pivoted frame, with the index-arm grasped between the thumb and forelinger, by which the indicator is moved, the letter-feed motion and the-inking of the type being automati vcally performed by the impression movement, and which is 'easily and rapidly aeco'mplished without removing the hand from its rest upon the pivoted frame.v

I am aware that it is not newvto form th type and characters upon'the periphery of a wheel or segment ota wheel, and that the cord device for rotatingthe type-wheel isv not new per se,- but in providing the type-wheel with an eleetrotype typerin g supported thereon and with au index upon its face, which is often a matter of great convenience, as the eye takes in the pointof impression and the desired letter at the same time, and in the details of construction by which a variable or changeable feed is obtained, and in the adaptation of the machine-for writing upon a level plane and circle, whereby the utility of the machine is augmented, it is believed a new, simple, and eicieut machine isproduced.

It is not intended to restrict my invention to theexact construction and arrangement of parts as herein shown, but to claim the right to such modifications as are within the spirit and 4scope of the invention.

Having described my invention, I claim- 1. 'lhe'combination in a type-writing machine supported upon rollers, and adapted to be moved thereon upon a level plane to space the lines of writing,ofa sliding-traine, adapted to be fed or moved' along to space or form the letters in writing, a supporting frame pivotally attached to said sliding frame and mov- IOO iro

able thereon in a vertical direction, a typewheel rigidly mounted upon a shaft journaled to be rotated in said supporting frame, and adaptedto he moved vertically therewith to form theimpression, and a spring adapted to lift said type-wheel and frame to a non-impression position substantially as and for the purpose specified.

2. The combination in a type-writing machine, adapted to write upon a level plane as described, of a type-bearing-wheel mounted upon a shaft, and adapted to be rotated therewith, an index uponthe face side of said typewheel of the letters and characters borne thereon, a frame adapted to form a support and bearing for said type-wheel' and shaft, said frame pivotally attached to a slide, and adapted t be moved in a vertical direction thereon to form the impression, said slide adapted to be fed or moved along the line of writing one letter for each impression movement, and a stop attached to said type-Wheel frame, adapted to limit the upward or nonimpression movement thereof, and also adapted to press down the paper holdingspring when the impression is formed, substantially as and .for the purpose specified.

to rotate said shaft and type-wheel, substan- 'ment of the type-wheel, and a fixed registertially as and for the purpose specified.

4. Ina type-writing machine adapted to be moved as described to write upon a level 'plane` or sheet, the combination therein of a typewheel provided upon itsfront face with an index of the letters and characters upon the periphery thereof, and'with a detachably formed registering toothed ring secured to the reverse side of said type-Wheel; said typewheel removably mounted upon a shaft, and adapted to be rotated therewith, said shaft journaled in bearings of a supporting frame pivotally attached to a slide, said slide provided with a fixed pointer adapted to indicate the" letter to be printed represented upon the face side of the type-wheel, an upward 'projecting arm formed with or attachedto said slide, adapted to'limit the downward 'or impression moveing tooth attached to said slide substantially asand for the purpose specified.

V5. In the described type-writing machine the combination of a type-wheel supported upon a shaft, and adapted to berotated therewith; said shaft jonrnaled in a vertically movable frame, an index attached to the top of said frame transversely to said shafhrepresentingthe letters and characters upc-n said typewheel,.and an indicator pointer attached to a spring-bar adapted to move connectedly and in unison with the periphery of said type- Wheel to indicate the letter or character thereon to be written, substantially as and for the purpose specified. i

6. The combination in the described type Writing machine, of a feed motion arm actuu ated by the impression movement of the type Wheel frame, an intermediate pawl, carrying arin pivotally attached to said feed motion arm, and operated bylineans of a fixed point or projection upon one side of said feed motien arm, andan adjustable projection upon the other side tc'vary the stroke ot said pawl carrying arm, a retaining pawl, and a shaft.

provided. with a transverse projection interposed between `saidpawls and adapted to simultaneously lift and retain said pawls lifted from the teeth of the feed rack, substantially as and for the purpose specified.

7. The combination of a type-wheel supporting frame, pivotally attached to a sliding;A frame, an inkroller carrying,l arm, pvotally` `attached to said type-wheel frame, and provided vvith a lateral cam projection thereon, a stationary stud roller supported upon said sliding frame, said ink-roller and arm adapted to be pushed or tur'ned to one-side ofthe impression poiut, by said cam acting against said roller with the downward impression movement, and to be carried underneath the typen-heel to ink the type by means of a.-

SWANTE i. LARSON. Witnesses:

MARY C. Burmese,

ALBERT H. Penman. 

